Possible tools menu entries can be found in /usr/apps/org.tizen.menu/res/json/dvb/helper.json, but far from all can work so it's unworth to try everything (I didn't, so I can't give a definitive list, there are too many!). Better ask if you need any specific one, and I'll tell you its name and/or if possible at all. You can also, of course, explore by yourself with a bit of consistency

Other variables (PIC_OFF, HIDE_PIN, TIMEOUT) speak by themselves

Here are commands to access given features, the ones you can map to RC keys if you need any. Otherwise you can try from terminal:

Good job, can you use the Multi-Out Audio option in the K series? I want it to listen to the main channel through the speakers and the secondary channel through the bluetooth headphones. In the Q series it can be done. But I'm trying to do it in a series k and it tells me function not available.

Well I'd prefer report about lib to offtopic questions, but yeah multi audio looks to work: not with different "channel" though, just same audio on internal speaker and headphone. Not the purpose here anyway.

Not arguing, just telling I won't implement stuff that can't be implemented on my TV (and that nobody proven it existed, even on Q)
We're far from menu bindings anyway... If you've got something totally unrelated to topic you're in to suggest, you can use request topic